Motor rotor shaft grinding and positioning tool

Abstract

The utility model relates to the technical field of machining equipment, in particular to a motor rotor shaft grinding and positioning tool which comprises a grinding table, a second straight sliding rail arranged at the top of a workbench, a clamping assembly, a power cooling mechanism and a second clamping jaw. The clamping assembly is arranged at the end of the second straight sliding rail. The power cooling mechanism is arranged on the straight sliding rail II in a sliding manner; and the clamping jaw II is rotationally arranged on the power cooling mechanism. Through the arrangement of the power cooling mechanism and the clamping assembly, the first clamping jaw and the second clamping jaw are used in cooperation so that the two ends of rotors of different sizes can be clamped in all directions, and in the grinding process, the fixed filter plate can evenly mix cooling liquid inside; in this way, the heights of the electromagnets making contact with the two ends of the shaft body can be adjusted, the two ends of the shaft body can be kept horizontal after being limited, cooling liquid can be evenly mixed so that when the rotor needs to be cooled, the cooling liquid sprayed to the rotor can achieve the better cooling effect, and the machining quality of the rotor is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of processing equipment technology, and in particular to a positioning fixture for grinding motor rotor shaft. Background Technology

[0002] The motor rotor shaft grinding positioning fixture is a device used to ensure the precise positioning and fixation of the rotor shaft during the grinding process. It is crucial for ensuring machining accuracy, effectively improving machining accuracy and efficiency, and extending service life.

[0003] Chinese patent CN222511687U discloses a positioning fixture for grinding motor rotor shafts, including a worktable. A convex plate is positioned above the worktable, and U-shaped frames are fixed to both ends of the top of the convex plate. An inner screw is fixed to the top of each U-shaped frame, and a screw is threaded into the interior of each inner screw. A top plate is positioned above each screw, and the top of the screw is rotatably connected to the bottom of the top plate. Trapezoidal blocks are fixed to both ends of the top plate. The shaft can be placed between two electromagnets within the trapezoidal blocks. Energizing the electromagnets fixes and limits the two ends of the shaft. After rotation, the screw can rise or fall from inside the inner screw, allowing the electromagnets at both ends of the shaft to change height. This ensures that the two ends of the shaft remain horizontal after being limited, preventing dimensional discrepancies after grinding due to misalignment during clamping.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: the existing motor rotor shaft grinding positioning fixture cannot stably install rotors of different sizes, which means that the equipment needs to be changed every time a rotor of a different size is ground, affecting the work progress. At the same time, the rotor cannot be cooled during the grinding process, which affects the grinding effect. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that it is impossible to stably install rotors of different sizes and cool the rotors during grinding, and to propose a positioning fixture for grinding motor rotor shafts.

[0006] The technical solution of this utility model: A grinding and positioning fixture for a motor rotor shaft, comprising a grinding table and a second straight slide rail disposed on the top of the worktable; further comprising:

[0007] A clamping assembly is located at the end of the second straight slide rail and is used to assist in fixing one end of the motor rotor.

[0008] The power cooling mechanism is slidably mounted on the straight slide rail 2. It is used to clamp the other end of the motor rotor in all directions and drive it to rotate, while cooling the motor rotor during the processing.

[0009] And the second gripper, which is rotatably mounted on the power cooling mechanism, has three grippers arranged in a ring around the power cooling mechanism, used to clamp and fix the outer side of motor rotors of different sizes from all directions.

[0010] Preferably, it also includes a grinding assembly, which includes a sliding table, a straight slide rail, and a grinding disc;

[0011] A straight slide rail is located on the top of the grinding table, a sliding table is slidably located inside the straight slide rail, and a grinding disc is rotatably located on the side of the sliding table and at the top.

[0012] Preferably, the clamping assembly includes a mounting platform, a rotating ring, a telescopic tube, and a spring;

[0013] Mounting platform 1 is located at the end of straight slide rail 2. Rotating ring is rotatably located inside mounting platform 1. Telescopic tube is located inside rotating ring. Spring is located outside telescopic tube. Clamp 1 is located at the end of telescopic tube away from rotating ring. Threaded rod 1 is rotatably located on the side of mounting platform 1. Power rod is located at the end of threaded rod 1 away from mounting platform 1.

[0014] Preferably, the power cooling mechanism includes a rotating assembly, a mounting assembly, and a cooling assembly;

[0015] The rotating component is slidably mounted on the inner side of the straight slide rail 2 to drive the motor rotor to rotate;

[0016] The mounting assembly is located on the side of the cooling assembly away from the rotating assembly, and is used to clamp and mount the motor rotor from all directions.

[0017] The cooling assembly is located at the end of the rotating assembly and is used to cool the rotor during grinding.

[0018] Preferably, the rotating assembly includes a mounting platform, a motor, and a rotating shaft;

[0019] Mounting platform two is slidably mounted inside straight slide rail two, the motor is mounted inside mounting platform two, the rotating shaft is mounted at the output end of the motor, and the inner side of mounting platform two is threadedly connected to the outer side of threaded rod one.

[0020] Preferably, the cooling assembly includes a cooling box, an inlet pipe, a connecting ring, and a fixed filter plate;

[0021] The cooling box is located at the end of the rotating shaft away from the motor. The liquid inlet pipe is located on the outside of the cooling box. A sealing end cap is provided on the top of the liquid inlet pipe. The connecting ring is rotatably located on the side of the cooling box. A fixed filter plate is provided on the side of the connecting ring. A connecting rod is provided on the side of the connecting ring away from the cooling box. The end of the connecting rod away from the connecting ring is connected to the outside of the motor.

[0022] Preferably, the mounting assembly includes a mounting ring, a second connecting shaft, a rotating frame, and a first connecting shaft;

[0023] The mounting ring is rotatably mounted on the side of the cooling box. Connecting shaft one is mounted on the mounting ring. Rotating frame is rotatably mounted on the end of connecting shaft one. A sliding rod is slidably mounted on the inner side of the rotating frame. Connecting shaft two is rotatably mounted on the end of the sliding rod. Clamp two is mounted on the end of the sliding rod away from connecting shaft two. Connecting block is mounted on the outer side of the mounting ring. Threaded block one is mounted on the side of the connecting block. Threaded rod two is threadedly connected to the inner side of threaded block one. Rotating rod is mounted on the end of threaded rod two. Threaded block two is threadedly connected to the end of threaded rod two near the rotating rod. Threaded block two is rotatably connected to the side of threaded block two and the fixing frame.

[0024] Compared with the prior art, this utility model has the following beneficial technical effects: Through the setting of the power cooling mechanism and clamping components, the first and second clamps work together to clamp both ends of rotors of different sizes in all directions. The motor drives the rotor to rotate through the second clamp to assist the grinding work. During the grinding process, the fixed filter plate can mix the internal coolant evenly. This allows the height of the electromagnets contacting both ends of the shaft to be adjusted so that the two ends of the shaft can remain horizontal after being limited, thereby avoiding the problem of dimensional difference after grinding due to misalignment during later clamping. The uniform mixing of the coolant allows the coolant sprayed on the rotor to achieve a better cooling effect when the rotor needs to be cooled, ensuring the processing quality of the rotor. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the clamping assembly.

[0027] Figure 3 This is a schematic diagram of the power cooling mechanism;

[0028] Figure 4 This is a partial structural diagram of the power cooling mechanism.

[0029] Reference numerals in the attached diagram: 1. Grinding table; 2. Sliding table; 3. Grinding disc; 401. Mounting platform one; 402. Rotating ring; 403. Telescopic tube; 404. Spring; 405. Clamp one; 406. Threaded rod one; 407. Power rod; 408. Straight slide rail two; 501. Mounting platform two; 502. Mounting ring; 503. Connecting shaft two; 504. Rotating frame; 505. Connecting shaft one; 506. Sliding rod; 507. Clamp two; 508. Connecting block; 509. Threaded block one; 510. Threaded rod two; 511. Threaded block two; 512. Rotating rod; 513. Cooling box; 514. Liquid inlet pipe; 515. Connecting ring; 516. Connecting rod; 517. Motor; 518. Rotating shaft; 519. Fixed filter plate; 6. Straight slide rail one. Detailed Implementation

[0030] Example 1

[0031] like Figures 1-2 As shown, the present invention proposes a grinding and positioning fixture for a motor rotor shaft, comprising a grinding table 1, a straight slide rail 408 disposed on the top of the worktable, a clamping assembly, a power cooling mechanism, and a gripper 507.

[0032] The clamping assembly is located at the end of the straight slide rail 2 408 and is used to assist in fixing one end of the motor rotor;

[0033] The power cooling mechanism is slidably mounted on the straight slide rail 2 408, which is used to clamp the other end of the motor rotor in all directions and drive it to rotate, while cooling the motor rotor during the processing.

[0034] The second gripper 507 is rotatably mounted on the power cooling mechanism. Three grippers 507 are arranged in a ring around the power cooling mechanism to clamp and fix the outer side of motor rotors of different sizes from all directions.

[0035] The grinding assembly includes a sliding table 2, a straight slide rail 6, and a grinding disc 3. The straight slide rail 6 is located on the top of the grinding table 1, the sliding table 2 is slidably located inside the straight slide rail 6, and the grinding disc 3 is rotatably located on the side of the sliding table 2 and at the top. The sliding table 2 can control the opening of the grinding disc 3, and at the same time, sliding on the straight slide rail 408 can drive the grinding disc 3 to grind the rotor at any position.

[0036] The clamping assembly includes a mounting platform 401, a rotating ring 402, a telescopic tube 403, and a spring 404. The mounting platform 401 is located at the end of the straight slide rail 408. The rotating ring 402 is rotatably located inside the mounting platform 401. The telescopic tube 403 is located inside the rotating ring 402. The spring 404 is located outside the telescopic tube 403. A gripper 405 is located at the end of the telescopic tube 403 away from the rotating ring 402. Three grippers 405 are arranged in a ring around the rotating ring 402. A threaded rod 406 is rotatably located on the side of the mounting platform 401. A power rod 407 is located at the end of the threaded rod 406 away from the mounting platform 401.

[0037] Example 2

[0038] like Figures 3-4 As shown, this utility model proposes a motor rotor shaft grinding and positioning fixture. Compared with Embodiment 1, this embodiment details the structure of the power cooling mechanism.

[0039] The power cooling mechanism includes a rotating component, a mounting component, and a cooling component. The rotating component is slidably disposed inside the straight slide rail 408 and is used to drive the motor rotor to rotate. The mounting component is disposed on the side of the cooling component away from the rotating component and is used to clamp and mount the motor rotor in all directions. The cooling component is disposed at the end of the rotating component and is used to cool the rotor during grinding. The rotating assembly includes a second mounting platform 501, a motor 517, and a rotating shaft 518. The second mounting platform 501 is slidably disposed inside the second straight slide rail 408. The motor 517 is disposed inside the second mounting platform 501. The rotating shaft 518 is disposed at the output end of the motor 517. The inner side of the second mounting platform 501 is threadedly connected to the outer side of the first threaded rod 406. The first threaded rod 406 is rotated by the power rod 407. When the first threaded rod 406 rotates, it drives the second mounting platform 501 to slide on the second straight slide rail 408, thereby adjusting the distance between the second mounting platform 501 and the first mounting platform 401, and thus completely fixing the rotor. The motor 517 is started, and the motor 517 drives the rotating shaft 518 to rotate. The cooling assembly includes a cooling box 513, an inlet pipe 514, a connecting ring 515, and fixed filter plates 519. The cooling box 513 is located at the end of the rotating shaft 518 away from the motor. The inlet pipe 514 is located on the outside of the cooling box 513. The side of the cooling box 513 closest to the mounting assembly is made of heat-conducting material to facilitate heat transfer to the rotor. A sealing end cap is provided on the top of the inlet pipe 514. The connecting ring 515 is rotatably mounted on the side of the cooling box 513. Fixed filter plates 519 are provided on the side of the connecting ring 515. Three fixed filter plates 519 are arranged in a ring around the connecting ring 515. The end of 9 is in contact with the outer side of the rotating shaft 518. A connecting rod 516 is provided on the side of the connecting ring 515 away from the cooling box 513. The end of the connecting rod 516 away from the connecting ring 515 is connected to the outer side of the motor 517. Before grinding, the coolant is delivered into the cooling box 513 through the inlet. Then the end cover is closed. The rotating shaft 518 drives the cooling box 513 to rotate. When the cooling box 513 rotates, it drives the internal coolant to flow. Since the position of the connecting ring 515 is fixed, the fixed filter plate 519 can drive the internal coolant to flow better, thereby ensuring the temperature of the internal coolant is uniform.The mounting assembly includes a mounting ring 502, a second connecting shaft 503, a rotating frame 504, and a first connecting shaft 505. The mounting ring 502 is rotatably mounted on the side of the cooling box 513. The first connecting shaft 505 is mounted on the mounting ring 502. The rotating frame 504 is rotatably mounted on the end of the first connecting shaft 505. A sliding rod 506 is slidably mounted on the inner side of the rotating frame 504. The second connecting shaft 503 is rotatably mounted on the end of the sliding rod 506. A second clamp 507 is mounted on the end of the sliding rod 506 away from the second connecting shaft 503. A connecting block 508 is mounted on the outer side of the mounting ring 502. A threaded block 509 is mounted on the side of the connecting block 508. A threaded rod 510 is threadedly connected to the inner side of the threaded block 509. A rotating rod 512 is mounted on the end of the threaded rod 510 near the rotating rod 512. A threaded block 511 is threadedly connected to the side of the threaded block 511 and the fixing frame.

[0040] In summary, when using this invention, coolant is delivered into the cooling box 513 through the inlet, then the end cap is closed, and one end of the rotor is placed against the side of the cooling box 513. Then, rotating the rotating rod 512 drives the threaded rod 510 to rotate. The rotation of the threaded rod 510 drives the threaded block 509 to move, thereby driving the mounting ring 502 to rotate via the connecting block 508. When the mounting ring 502 rotates, it drives the sliding rod 506 to slide within the rotating frame 504 and simultaneously rotate on the connecting shaft 503, causing all three sliding rods 506 to retract inwards. This allows for omnidirectional clamping and fixing of rotors of different sizes. After installation, rotating the power rod 407 drives the threaded rod 406 to rotate. When the threaded rod 406 rotates... The second mounting platform 501 slides on the second straight slide rail 408, thereby adjusting the distance between the second mounting platform 501 and the first mounting platform 401. This causes the other end of the rotor to abut against the inner side of the first mounting platform 401. The first clamp 405 further stabilizes the end of the rotor through the spring 404 and the telescopic tube 403. Then, the motor 517 is started, which drives the rotating shaft 518 to rotate. The rotating shaft 518 drives the rotor to rotate through the cooling box 513. Then, the grinding disc 3 is started to grind the outer side of the rotor. During the grinding process, the rotation of the cooling box 513 drives the internal coolant to flow. The fixed filter plate 519 can drive the internal coolant to flow better, thereby ensuring the temperature of the internal coolant is uniform and enhancing the cooling effect on the rotor.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A motor rotor shaft grinding positioning tool, comprising a grinding table (1) and a straight slide rail two (408) arranged on the top of the table; characterized in that, Also includes: Clamping assembly, clamping assembly is arranged in the end of straight slide rail two (408), for the auxiliary fixed end of motor rotor; Power cooling mechanism, power cooling mechanism is arranged on the straight slide rail two (408) slidingly, for the all-around clamping and driving of the other end of the motor rotor, while cooling the motor rotor during processing; And the clamping jaw two (507), the clamping jaw two (507) is rotatably arranged on the power cooling mechanism, the clamping jaw two (507) is arranged in three around the power cooling mechanism, for all-around clamping and fixing the outside of different size motor rotor.

2. The motor rotor shaft grinding and positioning fixture of claim 1, wherein, Also includes polishing assembly, polishing assembly includes sliding table (2), straight slide rail one (6) and grinding disc (3); The straight slide rail one (6) is arranged on the top of the grinding table (1), the sliding table (2) is slidably arranged on the inner side of the straight slide rail one (6), the grinding disc (3) is rotatably arranged on the side of the sliding table (2), and is located on the top.

3. The motor rotor shaft grinding and positioning fixture of claim 1, wherein, The clamping assembly includes mounting table one (401), rotating ring (402), telescopic pipe (403) and spring (404); The mounting table one (401) is arranged on the end of the straight slide rail two (408), the rotating ring (402) is rotatably arranged on the inner side of the mounting table one (401), the telescopic pipe (403) is arranged on the inner side of the rotating ring (402), the spring (404) is arranged on the outer side of the telescopic pipe (403), the end of the telescopic pipe (403) away from the rotating ring (402) is provided with the clamping jaw one (405), the side of the mounting table one (401) is rotatably provided with the threaded rod one (406), and the end of the threaded rod one (406) away from the mounting table one (401) is provided with the power rod (407).

4. The motor rotor shaft grinding and positioning fixture of claim 1, wherein, The power cooling mechanism includes rotating assembly, mounting assembly and cooling assembly; The rotating assembly is slidably arranged on the inner side of the straight slide rail two (408), for driving the motor rotor to rotate; The mounting assembly is arranged on the side of the cooling assembly away from the rotating assembly, for all-around clamping and mounting the motor rotor; The cooling assembly is arranged on the end of the rotating assembly, for cooling the rotor during grinding processing.

5. The motor rotor shaft grinding and positioning fixture of claim 4, wherein, The rotating assembly includes mounting table two (501), motor (517) and rotating shaft (518); The mounting table two (501) is slidably arranged on the inner side of the straight slide rail two (408), the motor (517) is arranged on the inner side of the mounting table two (501), the rotating shaft (518) is arranged on the output end of the motor (517), and the inner side of the mounting table two (501) and the outer side of the threaded rod one (406) are screw connected.

6. The motor rotor shaft grinding and positioning fixture of claim 5, wherein, The cooling assembly includes cooling box (513), liquid inlet pipe (514), connecting ring (515) and fixed filter plate (519); The cooling box (513) is arranged at the end of the rotating shaft (518) away from the motor, the liquid inlet pipe (514) is arranged outside the cooling box (513), the top of the liquid inlet pipe (514) is provided with a sealing end cover, the connecting ring (515) is rotatably arranged on the side of the cooling box (513), the side of the connecting ring (515) is provided with a fixed filter plate (519), the side of the connecting ring (515) away from the cooling box (513) is provided with a connecting rod (516), and the end of the connecting rod (516) away from the connecting ring (515) is connected to the outside of the motor (517).

7. The motor rotor shaft grinding and positioning fixture of claim 6, wherein, The mounting assembly comprises a mounting ring (502), a connecting shaft two (503), a rotating frame (504) and a connecting shaft one (505); The mounting ring (502) is rotatably arranged on the side of the cooling box (513), the connecting shaft one (505) is arranged on the mounting ring (502), the rotating frame (504) is rotatably arranged at the end of the connecting shaft one (505), the inner side of the rotating frame (504) is slidably provided with a sliding rod (506), the connecting shaft two (503) is rotatably arranged at the end of the sliding rod (506), the clamping jaw two (507) is arranged at the end of the sliding rod (506) away from the connecting shaft two (503), the outer side of the mounting ring (502) is provided with a connecting block (508), the side of the connecting block (508) is provided with a threaded block one (509), the inner side of the threaded block one (509) is threadedly connected with a threaded rod two (510), the end of the threaded rod two (510) is provided with a rotating rod (512), the end of the threaded rod two (510) close to the rotating rod (512) is threadedly connected with a threaded block two (511), and the side of the threaded block two (511) is rotatably connected with the fixed frame.

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